1*ed0d50c3Schristos@c The GNU Free Documentation License.
2*ed0d50c3Schristos@center Version 1.3, 3 November 2008
3*ed0d50c3Schristos
4*ed0d50c3Schristos@c This file is intended to be included within another document,
5*ed0d50c3Schristos@c hence no sectioning command or @node.
6*ed0d50c3Schristos
7*ed0d50c3Schristos@display
8*ed0d50c3SchristosCopyright @copyright{} 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
9*ed0d50c3Schristos@uref{http://fsf.org/}
10*ed0d50c3Schristos
11*ed0d50c3SchristosEveryone is permitted to copy and distribute verbatim copies
12*ed0d50c3Schristosof this license document, but changing it is not allowed.
13*ed0d50c3Schristos@end display
14*ed0d50c3Schristos
15*ed0d50c3Schristos@enumerate 0
16*ed0d50c3Schristos@item
17*ed0d50c3SchristosPREAMBLE
18*ed0d50c3Schristos
19*ed0d50c3SchristosThe purpose of this License is to make a manual, textbook, or other
20*ed0d50c3Schristosfunctional and useful document @dfn{free} in the sense of freedom: to
21*ed0d50c3Schristosassure everyone the effective freedom to copy and redistribute it,
22*ed0d50c3Schristoswith or without modifying it, either commercially or noncommercially.
23*ed0d50c3SchristosSecondarily, this License preserves for the author and publisher a way
24*ed0d50c3Schristosto get credit for their work, while not being considered responsible
25*ed0d50c3Schristosfor modifications made by others.
26*ed0d50c3Schristos
27*ed0d50c3SchristosThis License is a kind of ``copyleft'', which means that derivative
28*ed0d50c3Schristosworks of the document must themselves be free in the same sense.  It
29*ed0d50c3Schristoscomplements the GNU General Public License, which is a copyleft
30*ed0d50c3Schristoslicense designed for free software.
31*ed0d50c3Schristos
32*ed0d50c3SchristosWe have designed this License in order to use it for manuals for free
33*ed0d50c3Schristossoftware, because free software needs free documentation: a free
34*ed0d50c3Schristosprogram should come with manuals providing the same freedoms that the
35*ed0d50c3Schristossoftware does.  But this License is not limited to software manuals;
36*ed0d50c3Schristosit can be used for any textual work, regardless of subject matter or
37*ed0d50c3Schristoswhether it is published as a printed book.  We recommend this License
38*ed0d50c3Schristosprincipally for works whose purpose is instruction or reference.
39*ed0d50c3Schristos
40*ed0d50c3Schristos@item
41*ed0d50c3SchristosAPPLICABILITY AND DEFINITIONS
42*ed0d50c3Schristos
43*ed0d50c3SchristosThis License applies to any manual or other work, in any medium, that
44*ed0d50c3Schristoscontains a notice placed by the copyright holder saying it can be
45*ed0d50c3Schristosdistributed under the terms of this License.  Such a notice grants a
46*ed0d50c3Schristosworld-wide, royalty-free license, unlimited in duration, to use that
47*ed0d50c3Schristoswork under the conditions stated herein.  The ``Document'', below,
48*ed0d50c3Schristosrefers to any such manual or work.  Any member of the public is a
49*ed0d50c3Schristoslicensee, and is addressed as ``you''.  You accept the license if you
50*ed0d50c3Schristoscopy, modify or distribute the work in a way requiring permission
51*ed0d50c3Schristosunder copyright law.
52*ed0d50c3Schristos
53*ed0d50c3SchristosA ``Modified Version'' of the Document means any work containing the
54*ed0d50c3SchristosDocument or a portion of it, either copied verbatim, or with
55*ed0d50c3Schristosmodifications and/or translated into another language.
56*ed0d50c3Schristos
57*ed0d50c3SchristosA ``Secondary Section'' is a named appendix or a front-matter section
58*ed0d50c3Schristosof the Document that deals exclusively with the relationship of the
59*ed0d50c3Schristospublishers or authors of the Document to the Document's overall
60*ed0d50c3Schristossubject (or to related matters) and contains nothing that could fall
61*ed0d50c3Schristosdirectly within that overall subject.  (Thus, if the Document is in
62*ed0d50c3Schristospart a textbook of mathematics, a Secondary Section may not explain
63*ed0d50c3Schristosany mathematics.)  The relationship could be a matter of historical
64*ed0d50c3Schristosconnection with the subject or with related matters, or of legal,
65*ed0d50c3Schristoscommercial, philosophical, ethical or political position regarding
66*ed0d50c3Schristosthem.
67*ed0d50c3Schristos
68*ed0d50c3SchristosThe ``Invariant Sections'' are certain Secondary Sections whose titles
69*ed0d50c3Schristosare designated, as being those of Invariant Sections, in the notice
70*ed0d50c3Schristosthat says that the Document is released under this License.  If a
71*ed0d50c3Schristossection does not fit the above definition of Secondary then it is not
72*ed0d50c3Schristosallowed to be designated as Invariant.  The Document may contain zero
73*ed0d50c3SchristosInvariant Sections.  If the Document does not identify any Invariant
74*ed0d50c3SchristosSections then there are none.
75*ed0d50c3Schristos
76*ed0d50c3SchristosThe ``Cover Texts'' are certain short passages of text that are listed,
77*ed0d50c3Schristosas Front-Cover Texts or Back-Cover Texts, in the notice that says that
78*ed0d50c3Schristosthe Document is released under this License.  A Front-Cover Text may
79*ed0d50c3Schristosbe at most 5 words, and a Back-Cover Text may be at most 25 words.
80*ed0d50c3Schristos
81*ed0d50c3SchristosA ``Transparent'' copy of the Document means a machine-readable copy,
82*ed0d50c3Schristosrepresented in a format whose specification is available to the
83*ed0d50c3Schristosgeneral public, that is suitable for revising the document
84*ed0d50c3Schristosstraightforwardly with generic text editors or (for images composed of
85*ed0d50c3Schristospixels) generic paint programs or (for drawings) some widely available
86*ed0d50c3Schristosdrawing editor, and that is suitable for input to text formatters or
87*ed0d50c3Schristosfor automatic translation to a variety of formats suitable for input
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90*ed0d50c3Schristosor discourage subsequent modification by readers is not Transparent.
91*ed0d50c3SchristosAn image format is not Transparent if used for any substantial amount
92*ed0d50c3Schristosof text.  A copy that is not ``Transparent'' is called ``Opaque''.
93*ed0d50c3Schristos
94*ed0d50c3SchristosExamples of suitable formats for Transparent copies include plain
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96*ed0d50c3Schristosformat, @acronym{SGML} or @acronym{XML} using a publicly available
97*ed0d50c3Schristos@acronym{DTD}, and standard-conforming simple @acronym{HTML},
98*ed0d50c3SchristosPostScript or @acronym{PDF} designed for human modification.  Examples
99*ed0d50c3Schristosof transparent image formats include @acronym{PNG}, @acronym{XCF} and
100*ed0d50c3Schristos@acronym{JPG}.  Opaque formats include proprietary formats that can be
101*ed0d50c3Schristosread and edited only by proprietary word processors, @acronym{SGML} or
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103*ed0d50c3Schristosnot generally available, and the machine-generated @acronym{HTML},
104*ed0d50c3SchristosPostScript or @acronym{PDF} produced by some word processors for
105*ed0d50c3Schristosoutput purposes only.
106*ed0d50c3Schristos
107*ed0d50c3SchristosThe ``Title Page'' means, for a printed book, the title page itself,
108*ed0d50c3Schristosplus such following pages as are needed to hold, legibly, the material
109*ed0d50c3Schristosthis License requires to appear in the title page.  For works in
110*ed0d50c3Schristosformats which do not have any title page as such, ``Title Page'' means
111*ed0d50c3Schristosthe text near the most prominent appearance of the work's title,
112*ed0d50c3Schristospreceding the beginning of the body of the text.
113*ed0d50c3Schristos
114*ed0d50c3SchristosThe ``publisher'' means any person or entity that distributes copies
115*ed0d50c3Schristosof the Document to the public.
116*ed0d50c3Schristos
117*ed0d50c3SchristosA section ``Entitled XYZ'' means a named subunit of the Document whose
118*ed0d50c3Schristostitle either is precisely XYZ or contains XYZ in parentheses following
119*ed0d50c3Schristostext that translates XYZ in another language.  (Here XYZ stands for a
120*ed0d50c3Schristosspecific section name mentioned below, such as ``Acknowledgements'',
121*ed0d50c3Schristos``Dedications'', ``Endorsements'', or ``History''.)  To ``Preserve the Title''
122*ed0d50c3Schristosof such a section when you modify the Document means that it remains a
123*ed0d50c3Schristossection ``Entitled XYZ'' according to this definition.
124*ed0d50c3Schristos
125*ed0d50c3SchristosThe Document may include Warranty Disclaimers next to the notice which
126*ed0d50c3Schristosstates that this License applies to the Document.  These Warranty
127*ed0d50c3SchristosDisclaimers are considered to be included by reference in this
128*ed0d50c3SchristosLicense, but only as regards disclaiming warranties: any other
129*ed0d50c3Schristosimplication that these Warranty Disclaimers may have is void and has
130*ed0d50c3Schristosno effect on the meaning of this License.
131*ed0d50c3Schristos
132*ed0d50c3Schristos@item
133*ed0d50c3SchristosVERBATIM COPYING
134*ed0d50c3Schristos
135*ed0d50c3SchristosYou may copy and distribute the Document in any medium, either
136*ed0d50c3Schristoscommercially or noncommercially, provided that this License, the
137*ed0d50c3Schristoscopyright notices, and the license notice saying this License applies
138*ed0d50c3Schristosto the Document are reproduced in all copies, and that you add no other
139*ed0d50c3Schristosconditions whatsoever to those of this License.  You may not use
140*ed0d50c3Schristostechnical measures to obstruct or control the reading or further
141*ed0d50c3Schristoscopying of the copies you make or distribute.  However, you may accept
142*ed0d50c3Schristoscompensation in exchange for copies.  If you distribute a large enough
143*ed0d50c3Schristosnumber of copies you must also follow the conditions in section 3.
144*ed0d50c3Schristos
145*ed0d50c3SchristosYou may also lend copies, under the same conditions stated above, and
146*ed0d50c3Schristosyou may publicly display copies.
147*ed0d50c3Schristos
148*ed0d50c3Schristos@item
149*ed0d50c3SchristosCOPYING IN QUANTITY
150*ed0d50c3Schristos
151*ed0d50c3SchristosIf you publish printed copies (or copies in media that commonly have
152*ed0d50c3Schristosprinted covers) of the Document, numbering more than 100, and the
153*ed0d50c3SchristosDocument's license notice requires Cover Texts, you must enclose the
154*ed0d50c3Schristoscopies in covers that carry, clearly and legibly, all these Cover
155*ed0d50c3SchristosTexts: Front-Cover Texts on the front cover, and Back-Cover Texts on
156*ed0d50c3Schristosthe back cover.  Both covers must also clearly and legibly identify
157*ed0d50c3Schristosyou as the publisher of these copies.  The front cover must present
158*ed0d50c3Schristosthe full title with all words of the title equally prominent and
159*ed0d50c3Schristosvisible.  You may add other material on the covers in addition.
160*ed0d50c3SchristosCopying with changes limited to the covers, as long as they preserve
161*ed0d50c3Schristosthe title of the Document and satisfy these conditions, can be treated
162*ed0d50c3Schristosas verbatim copying in other respects.
163*ed0d50c3Schristos
164*ed0d50c3SchristosIf the required texts for either cover are too voluminous to fit
165*ed0d50c3Schristoslegibly, you should put the first ones listed (as many as fit
166*ed0d50c3Schristosreasonably) on the actual cover, and continue the rest onto adjacent
167*ed0d50c3Schristospages.
168*ed0d50c3Schristos
169*ed0d50c3SchristosIf you publish or distribute Opaque copies of the Document numbering
170*ed0d50c3Schristosmore than 100, you must either include a machine-readable Transparent
171*ed0d50c3Schristoscopy along with each Opaque copy, or state in or with each Opaque copy
172*ed0d50c3Schristosa computer-network location from which the general network-using
173*ed0d50c3Schristospublic has access to download using public-standard network protocols
174*ed0d50c3Schristosa complete Transparent copy of the Document, free of added material.
175*ed0d50c3SchristosIf you use the latter option, you must take reasonably prudent steps,
176*ed0d50c3Schristoswhen you begin distribution of Opaque copies in quantity, to ensure
177*ed0d50c3Schristosthat this Transparent copy will remain thus accessible at the stated
178*ed0d50c3Schristoslocation until at least one year after the last time you distribute an
179*ed0d50c3SchristosOpaque copy (directly or through your agents or retailers) of that
180*ed0d50c3Schristosedition to the public.
181*ed0d50c3Schristos
182*ed0d50c3SchristosIt is requested, but not required, that you contact the authors of the
183*ed0d50c3SchristosDocument well before redistributing any large number of copies, to give
184*ed0d50c3Schristosthem a chance to provide you with an updated version of the Document.
185*ed0d50c3Schristos
186*ed0d50c3Schristos@item
187*ed0d50c3SchristosMODIFICATIONS
188*ed0d50c3Schristos
189*ed0d50c3SchristosYou may copy and distribute a Modified Version of the Document under
190*ed0d50c3Schristosthe conditions of sections 2 and 3 above, provided that you release
191*ed0d50c3Schristosthe Modified Version under precisely this License, with the Modified
192*ed0d50c3SchristosVersion filling the role of the Document, thus licensing distribution
193*ed0d50c3Schristosand modification of the Modified Version to whoever possesses a copy
194*ed0d50c3Schristosof it.  In addition, you must do these things in the Modified Version:
195*ed0d50c3Schristos
196*ed0d50c3Schristos@enumerate A
197*ed0d50c3Schristos@item
198*ed0d50c3SchristosUse in the Title Page (and on the covers, if any) a title distinct
199*ed0d50c3Schristosfrom that of the Document, and from those of previous versions
200*ed0d50c3Schristos(which should, if there were any, be listed in the History section
201*ed0d50c3Schristosof the Document).  You may use the same title as a previous version
202*ed0d50c3Schristosif the original publisher of that version gives permission.
203*ed0d50c3Schristos
204*ed0d50c3Schristos@item
205*ed0d50c3SchristosList on the Title Page, as authors, one or more persons or entities
206*ed0d50c3Schristosresponsible for authorship of the modifications in the Modified
207*ed0d50c3SchristosVersion, together with at least five of the principal authors of the
208*ed0d50c3SchristosDocument (all of its principal authors, if it has fewer than five),
209*ed0d50c3Schristosunless they release you from this requirement.
210*ed0d50c3Schristos
211*ed0d50c3Schristos@item
212*ed0d50c3SchristosState on the Title page the name of the publisher of the
213*ed0d50c3SchristosModified Version, as the publisher.
214*ed0d50c3Schristos
215*ed0d50c3Schristos@item
216*ed0d50c3SchristosPreserve all the copyright notices of the Document.
217*ed0d50c3Schristos
218*ed0d50c3Schristos@item
219*ed0d50c3SchristosAdd an appropriate copyright notice for your modifications
220*ed0d50c3Schristosadjacent to the other copyright notices.
221*ed0d50c3Schristos
222*ed0d50c3Schristos@item
223*ed0d50c3SchristosInclude, immediately after the copyright notices, a license notice
224*ed0d50c3Schristosgiving the public permission to use the Modified Version under the
225*ed0d50c3Schristosterms of this License, in the form shown in the Addendum below.
226*ed0d50c3Schristos
227*ed0d50c3Schristos@item
228*ed0d50c3SchristosPreserve in that license notice the full lists of Invariant Sections
229*ed0d50c3Schristosand required Cover Texts given in the Document's license notice.
230*ed0d50c3Schristos
231*ed0d50c3Schristos@item
232*ed0d50c3SchristosInclude an unaltered copy of this License.
233*ed0d50c3Schristos
234*ed0d50c3Schristos@item
235*ed0d50c3SchristosPreserve the section Entitled ``History'', Preserve its Title, and add
236*ed0d50c3Schristosto it an item stating at least the title, year, new authors, and
237*ed0d50c3Schristospublisher of the Modified Version as given on the Title Page.  If
238*ed0d50c3Schristosthere is no section Entitled ``History'' in the Document, create one
239*ed0d50c3Schristosstating the title, year, authors, and publisher of the Document as
240*ed0d50c3Schristosgiven on its Title Page, then add an item describing the Modified
241*ed0d50c3SchristosVersion as stated in the previous sentence.
242*ed0d50c3Schristos
243*ed0d50c3Schristos@item
244*ed0d50c3SchristosPreserve the network location, if any, given in the Document for
245*ed0d50c3Schristospublic access to a Transparent copy of the Document, and likewise
246*ed0d50c3Schristosthe network locations given in the Document for previous versions
247*ed0d50c3Schristosit was based on.  These may be placed in the ``History'' section.
248*ed0d50c3SchristosYou may omit a network location for a work that was published at
249*ed0d50c3Schristosleast four years before the Document itself, or if the original
250*ed0d50c3Schristospublisher of the version it refers to gives permission.
251*ed0d50c3Schristos
252*ed0d50c3Schristos@item
253*ed0d50c3SchristosFor any section Entitled ``Acknowledgements'' or ``Dedications'', Preserve
254*ed0d50c3Schristosthe Title of the section, and preserve in the section all the
255*ed0d50c3Schristossubstance and tone of each of the contributor acknowledgements and/or
256*ed0d50c3Schristosdedications given therein.
257*ed0d50c3Schristos
258*ed0d50c3Schristos@item
259*ed0d50c3SchristosPreserve all the Invariant Sections of the Document,
260*ed0d50c3Schristosunaltered in their text and in their titles.  Section numbers
261*ed0d50c3Schristosor the equivalent are not considered part of the section titles.
262*ed0d50c3Schristos
263*ed0d50c3Schristos@item
264*ed0d50c3SchristosDelete any section Entitled ``Endorsements''.  Such a section
265*ed0d50c3Schristosmay not be included in the Modified Version.
266*ed0d50c3Schristos
267*ed0d50c3Schristos@item
268*ed0d50c3SchristosDo not retitle any existing section to be Entitled ``Endorsements'' or
269*ed0d50c3Schristosto conflict in title with any Invariant Section.
270*ed0d50c3Schristos
271*ed0d50c3Schristos@item
272*ed0d50c3SchristosPreserve any Warranty Disclaimers.
273*ed0d50c3Schristos@end enumerate
274*ed0d50c3Schristos
275*ed0d50c3SchristosIf the Modified Version includes new front-matter sections or
276*ed0d50c3Schristosappendices that qualify as Secondary Sections and contain no material
277*ed0d50c3Schristoscopied from the Document, you may at your option designate some or all
278*ed0d50c3Schristosof these sections as invariant.  To do this, add their titles to the
279*ed0d50c3Schristoslist of Invariant Sections in the Modified Version's license notice.
280*ed0d50c3SchristosThese titles must be distinct from any other section titles.
281*ed0d50c3Schristos
282*ed0d50c3SchristosYou may add a section Entitled ``Endorsements'', provided it contains
283*ed0d50c3Schristosnothing but endorsements of your Modified Version by various
284*ed0d50c3Schristosparties---for example, statements of peer review or that the text has
285*ed0d50c3Schristosbeen approved by an organization as the authoritative definition of a
286*ed0d50c3Schristosstandard.
287*ed0d50c3Schristos
288*ed0d50c3SchristosYou may add a passage of up to five words as a Front-Cover Text, and a
289*ed0d50c3Schristospassage of up to 25 words as a Back-Cover Text, to the end of the list
290*ed0d50c3Schristosof Cover Texts in the Modified Version.  Only one passage of
291*ed0d50c3SchristosFront-Cover Text and one of Back-Cover Text may be added by (or
292*ed0d50c3Schristosthrough arrangements made by) any one entity.  If the Document already
293*ed0d50c3Schristosincludes a cover text for the same cover, previously added by you or
294*ed0d50c3Schristosby arrangement made by the same entity you are acting on behalf of,
295*ed0d50c3Schristosyou may not add another; but you may replace the old one, on explicit
296*ed0d50c3Schristospermission from the previous publisher that added the old one.
297*ed0d50c3Schristos
298*ed0d50c3SchristosThe author(s) and publisher(s) of the Document do not by this License
299*ed0d50c3Schristosgive permission to use their names for publicity for or to assert or
300*ed0d50c3Schristosimply endorsement of any Modified Version.
301*ed0d50c3Schristos
302*ed0d50c3Schristos@item
303*ed0d50c3SchristosCOMBINING DOCUMENTS
304*ed0d50c3Schristos
305*ed0d50c3SchristosYou may combine the Document with other documents released under this
306*ed0d50c3SchristosLicense, under the terms defined in section 4 above for modified
307*ed0d50c3Schristosversions, provided that you include in the combination all of the
308*ed0d50c3SchristosInvariant Sections of all of the original documents, unmodified, and
309*ed0d50c3Schristoslist them all as Invariant Sections of your combined work in its
310*ed0d50c3Schristoslicense notice, and that you preserve all their Warranty Disclaimers.
311*ed0d50c3Schristos
312*ed0d50c3SchristosThe combined work need only contain one copy of this License, and
313*ed0d50c3Schristosmultiple identical Invariant Sections may be replaced with a single
314*ed0d50c3Schristoscopy.  If there are multiple Invariant Sections with the same name but
315*ed0d50c3Schristosdifferent contents, make the title of each such section unique by
316*ed0d50c3Schristosadding at the end of it, in parentheses, the name of the original
317*ed0d50c3Schristosauthor or publisher of that section if known, or else a unique number.
318*ed0d50c3SchristosMake the same adjustment to the section titles in the list of
319*ed0d50c3SchristosInvariant Sections in the license notice of the combined work.
320*ed0d50c3Schristos
321*ed0d50c3SchristosIn the combination, you must combine any sections Entitled ``History''
322*ed0d50c3Schristosin the various original documents, forming one section Entitled
323*ed0d50c3Schristos``History''; likewise combine any sections Entitled ``Acknowledgements'',
324*ed0d50c3Schristosand any sections Entitled ``Dedications''.  You must delete all
325*ed0d50c3Schristossections Entitled ``Endorsements.''
326*ed0d50c3Schristos
327*ed0d50c3Schristos@item
328*ed0d50c3SchristosCOLLECTIONS OF DOCUMENTS
329*ed0d50c3Schristos
330*ed0d50c3SchristosYou may make a collection consisting of the Document and other documents
331*ed0d50c3Schristosreleased under this License, and replace the individual copies of this
332*ed0d50c3SchristosLicense in the various documents with a single copy that is included in
333*ed0d50c3Schristosthe collection, provided that you follow the rules of this License for
334*ed0d50c3Schristosverbatim copying of each of the documents in all other respects.
335*ed0d50c3Schristos
336*ed0d50c3SchristosYou may extract a single document from such a collection, and distribute
337*ed0d50c3Schristosit individually under this License, provided you insert a copy of this
338*ed0d50c3SchristosLicense into the extracted document, and follow this License in all
339*ed0d50c3Schristosother respects regarding verbatim copying of that document.
340*ed0d50c3Schristos
341*ed0d50c3Schristos@item
342*ed0d50c3SchristosAGGREGATION WITH INDEPENDENT WORKS
343*ed0d50c3Schristos
344*ed0d50c3SchristosA compilation of the Document or its derivatives with other separate
345*ed0d50c3Schristosand independent documents or works, in or on a volume of a storage or
346*ed0d50c3Schristosdistribution medium, is called an ``aggregate'' if the copyright
347*ed0d50c3Schristosresulting from the compilation is not used to limit the legal rights
348*ed0d50c3Schristosof the compilation's users beyond what the individual works permit.
349*ed0d50c3SchristosWhen the Document is included in an aggregate, this License does not
350*ed0d50c3Schristosapply to the other works in the aggregate which are not themselves
351*ed0d50c3Schristosderivative works of the Document.
352*ed0d50c3Schristos
353*ed0d50c3SchristosIf the Cover Text requirement of section 3 is applicable to these
354*ed0d50c3Schristoscopies of the Document, then if the Document is less than one half of
355*ed0d50c3Schristosthe entire aggregate, the Document's Cover Texts may be placed on
356*ed0d50c3Schristoscovers that bracket the Document within the aggregate, or the
357*ed0d50c3Schristoselectronic equivalent of covers if the Document is in electronic form.
358*ed0d50c3SchristosOtherwise they must appear on printed covers that bracket the whole
359*ed0d50c3Schristosaggregate.
360*ed0d50c3Schristos
361*ed0d50c3Schristos@item
362*ed0d50c3SchristosTRANSLATION
363*ed0d50c3Schristos
364*ed0d50c3SchristosTranslation is considered a kind of modification, so you may
365*ed0d50c3Schristosdistribute translations of the Document under the terms of section 4.
366*ed0d50c3SchristosReplacing Invariant Sections with translations requires special
367*ed0d50c3Schristospermission from their copyright holders, but you may include
368*ed0d50c3Schristostranslations of some or all Invariant Sections in addition to the
369*ed0d50c3Schristosoriginal versions of these Invariant Sections.  You may include a
370*ed0d50c3Schristostranslation of this License, and all the license notices in the
371*ed0d50c3SchristosDocument, and any Warranty Disclaimers, provided that you also include
372*ed0d50c3Schristosthe original English version of this License and the original versions
373*ed0d50c3Schristosof those notices and disclaimers.  In case of a disagreement between
374*ed0d50c3Schristosthe translation and the original version of this License or a notice
375*ed0d50c3Schristosor disclaimer, the original version will prevail.
376*ed0d50c3Schristos
377*ed0d50c3SchristosIf a section in the Document is Entitled ``Acknowledgements'',
378*ed0d50c3Schristos``Dedications'', or ``History'', the requirement (section 4) to Preserve
379*ed0d50c3Schristosits Title (section 1) will typically require changing the actual
380*ed0d50c3Schristostitle.
381*ed0d50c3Schristos
382*ed0d50c3Schristos@item
383*ed0d50c3SchristosTERMINATION
384*ed0d50c3Schristos
385*ed0d50c3SchristosYou may not copy, modify, sublicense, or distribute the Document
386*ed0d50c3Schristosexcept as expressly provided under this License.  Any attempt
387*ed0d50c3Schristosotherwise to copy, modify, sublicense, or distribute it is void, and
388*ed0d50c3Schristoswill automatically terminate your rights under this License.
389*ed0d50c3Schristos
390*ed0d50c3SchristosHowever, if you cease all violation of this License, then your license
391*ed0d50c3Schristosfrom a particular copyright holder is reinstated (a) provisionally,
392*ed0d50c3Schristosunless and until the copyright holder explicitly and finally
393*ed0d50c3Schristosterminates your license, and (b) permanently, if the copyright holder
394*ed0d50c3Schristosfails to notify you of the violation by some reasonable means prior to
395*ed0d50c3Schristos60 days after the cessation.
396*ed0d50c3Schristos
397*ed0d50c3SchristosMoreover, your license from a particular copyright holder is
398*ed0d50c3Schristosreinstated permanently if the copyright holder notifies you of the
399*ed0d50c3Schristosviolation by some reasonable means, this is the first time you have
400*ed0d50c3Schristosreceived notice of violation of this License (for any work) from that
401*ed0d50c3Schristoscopyright holder, and you cure the violation prior to 30 days after
402*ed0d50c3Schristosyour receipt of the notice.
403*ed0d50c3Schristos
404*ed0d50c3SchristosTermination of your rights under this section does not terminate the
405*ed0d50c3Schristoslicenses of parties who have received copies or rights from you under
406*ed0d50c3Schristosthis License.  If your rights have been terminated and not permanently
407*ed0d50c3Schristosreinstated, receipt of a copy of some or all of the same material does
408*ed0d50c3Schristosnot give you any rights to use it.
409*ed0d50c3Schristos
410*ed0d50c3Schristos@item
411*ed0d50c3SchristosFUTURE REVISIONS OF THIS LICENSE
412*ed0d50c3Schristos
413*ed0d50c3SchristosThe Free Software Foundation may publish new, revised versions
414*ed0d50c3Schristosof the GNU Free Documentation License from time to time.  Such new
415*ed0d50c3Schristosversions will be similar in spirit to the present version, but may
416*ed0d50c3Schristosdiffer in detail to address new problems or concerns.  See
417*ed0d50c3Schristos@uref{http://www.gnu.org/copyleft/}.
418*ed0d50c3Schristos
419*ed0d50c3SchristosEach version of the License is given a distinguishing version number.
420*ed0d50c3SchristosIf the Document specifies that a particular numbered version of this
421*ed0d50c3SchristosLicense ``or any later version'' applies to it, you have the option of
422*ed0d50c3Schristosfollowing the terms and conditions either of that specified version or
423*ed0d50c3Schristosof any later version that has been published (not as a draft) by the
424*ed0d50c3SchristosFree Software Foundation.  If the Document does not specify a version
425*ed0d50c3Schristosnumber of this License, you may choose any version ever published (not
426*ed0d50c3Schristosas a draft) by the Free Software Foundation.  If the Document
427*ed0d50c3Schristosspecifies that a proxy can decide which future versions of this
428*ed0d50c3SchristosLicense can be used, that proxy's public statement of acceptance of a
429*ed0d50c3Schristosversion permanently authorizes you to choose that version for the
430*ed0d50c3SchristosDocument.
431*ed0d50c3Schristos
432*ed0d50c3Schristos@item
433*ed0d50c3SchristosRELICENSING
434*ed0d50c3Schristos
435*ed0d50c3Schristos``Massive Multiauthor Collaboration Site'' (or ``MMC Site'') means any
436*ed0d50c3SchristosWorld Wide Web server that publishes copyrightable works and also
437*ed0d50c3Schristosprovides prominent facilities for anybody to edit those works.  A
438*ed0d50c3Schristospublic wiki that anybody can edit is an example of such a server.  A
439*ed0d50c3Schristos``Massive Multiauthor Collaboration'' (or ``MMC'') contained in the
440*ed0d50c3Schristossite means any set of copyrightable works thus published on the MMC
441*ed0d50c3Schristossite.
442*ed0d50c3Schristos
443*ed0d50c3Schristos``CC-BY-SA'' means the Creative Commons Attribution-Share Alike 3.0
444*ed0d50c3Schristoslicense published by Creative Commons Corporation, a not-for-profit
445*ed0d50c3Schristoscorporation with a principal place of business in San Francisco,
446*ed0d50c3SchristosCalifornia, as well as future copyleft versions of that license
447*ed0d50c3Schristospublished by that same organization.
448*ed0d50c3Schristos
449*ed0d50c3Schristos``Incorporate'' means to publish or republish a Document, in whole or
450*ed0d50c3Schristosin part, as part of another Document.
451*ed0d50c3Schristos
452*ed0d50c3SchristosAn MMC is ``eligible for relicensing'' if it is licensed under this
453*ed0d50c3SchristosLicense, and if all works that were first published under this License
454*ed0d50c3Schristossomewhere other than this MMC, and subsequently incorporated in whole
455*ed0d50c3Schristosor in part into the MMC, (1) had no cover texts or invariant sections,
456*ed0d50c3Schristosand (2) were thus incorporated prior to November 1, 2008.
457*ed0d50c3Schristos
458*ed0d50c3SchristosThe operator of an MMC Site may republish an MMC contained in the site
459*ed0d50c3Schristosunder CC-BY-SA on the same site at any time before August 1, 2009,
460*ed0d50c3Schristosprovided the MMC is eligible for relicensing.
461*ed0d50c3Schristos
462*ed0d50c3Schristos@end enumerate
463*ed0d50c3Schristos
464*ed0d50c3Schristos@page
465*ed0d50c3Schristos@heading ADDENDUM: How to use this License for your documents
466*ed0d50c3Schristos
467*ed0d50c3SchristosTo use this License in a document you have written, include a copy of
468*ed0d50c3Schristosthe License in the document and put the following copyright and
469*ed0d50c3Schristoslicense notices just after the title page:
470*ed0d50c3Schristos
471*ed0d50c3Schristos@smallexample
472*ed0d50c3Schristos@group
473*ed0d50c3Schristos  Copyright (C)  @var{year}  @var{your name}.
474*ed0d50c3Schristos  Permission is granted to copy, distribute and/or modify this document
475*ed0d50c3Schristos  under the terms of the GNU Free Documentation License, Version 1.3
476*ed0d50c3Schristos  or any later version published by the Free Software Foundation;
477*ed0d50c3Schristos  with no Invariant Sections, no Front-Cover Texts, and no Back-Cover
478*ed0d50c3Schristos  Texts.  A copy of the license is included in the section entitled ``GNU
479*ed0d50c3Schristos  Free Documentation License''.
480*ed0d50c3Schristos@end group
481*ed0d50c3Schristos@end smallexample
482*ed0d50c3Schristos
483*ed0d50c3SchristosIf you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
484*ed0d50c3Schristosreplace the ``with@dots{}Texts.'' line with this:
485*ed0d50c3Schristos
486*ed0d50c3Schristos@smallexample
487*ed0d50c3Schristos@group
488*ed0d50c3Schristos    with the Invariant Sections being @var{list their titles}, with
489*ed0d50c3Schristos    the Front-Cover Texts being @var{list}, and with the Back-Cover Texts
490*ed0d50c3Schristos    being @var{list}.
491*ed0d50c3Schristos@end group
492*ed0d50c3Schristos@end smallexample
493*ed0d50c3Schristos
494*ed0d50c3SchristosIf you have Invariant Sections without Cover Texts, or some other
495*ed0d50c3Schristoscombination of the three, merge those two alternatives to suit the
496*ed0d50c3Schristossituation.
497*ed0d50c3Schristos
498*ed0d50c3SchristosIf your document contains nontrivial examples of program code, we
499*ed0d50c3Schristosrecommend releasing these examples in parallel under your choice of
500*ed0d50c3Schristosfree software license, such as the GNU General Public License,
501*ed0d50c3Schristosto permit their use in free software.
502*ed0d50c3Schristos
503*ed0d50c3Schristos@c Local Variables:
504*ed0d50c3Schristos@c ispell-local-pdict: "ispell-dict"
505*ed0d50c3Schristos@c End:
506